I am pulling user data from a google analytics instance into a data visualization tool (Tableau) using a big query connector. However, I have noticed the data is incorrect. When I compare user exports directly from GA (users, sessions, etc.) and the BigQuery data set Tableau accesses, I see users listed in the GA data that aren't in BQ when comparing the same time frame in both systems.
Example, GA tells me that for a specific user set, 15 people logged in during October. But dashboarding driven from BQ is telling me only 9 users logged in during the same time.
I do not know how to troubleshoot the missing data. What resources can I use to walk through this issue? Any suggestions?
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